Hey everyone. Tonight I cut down the FSB on my new BCM hammer forged 16" midlength upper. I had a heck of a time getting the thing back on the bbl, and had to use a hammer. When I put the rear taper pin in, the bottom of the FSB/gas block split, and I was ticked. I am pretty sure it cracked while I was whacking on it to get it on the barell. I did not grind any further than I needed to when I was cutting the sling swivel off, so I am not sure why it was weak enough to crack.
Would it be possible to simply weld the crack up and grind it down smooth? Would it be a good fix? Would the heat from the weld mess with the barell steel? I know that cutting the pinned FSB is the most secure way to acheive a lo-pro gas block, and I do not want to have to use one with set screws, nor do I want to spend the extra $40 on one.
Any help would be much, much appreciated.
Thanks,
Mark
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